Bump FluentAssertions from 6.11.0 to 6.12.0

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.11.0 to 6.12.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.11.0...6.12.0)

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Directory.Build.props

@@ -33,7 +33,7 @@
     <XunitRunnerVSVersion>2.4.5</XunitRunnerVSVersion>
     <CoverletMSBuildVersion>6.0.0</CoverletMSBuildVersion>
     <XunitRunnerUtilityVersion>2.4.2</XunitRunnerUtilityVersion>
-    <FluentAssertionsVersion>6.11.0</FluentAssertionsVersion>
+    <FluentAssertionsVersion>6.12.0</FluentAssertionsVersion>
     <TestSdkVersion>17.6.2</TestSdkVersion>
     <SourceLinkGithubVersion>1.1.1</SourceLinkGithubVersion>
   </PropertyGroup>